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A new species of Ancistrus (Siluriformes: Loricariidae) from Tapajós and Xingu basins, Brazil

Authors :
Emanuel B. Neuhaus
Marcelo R. Britto
José Luís O. Birindelli
Leandro M. Sousa
Source :
Neotropical Ichthyology, Vol 20, Iss 1 (2022)
Publication Year :
2022
Publisher :
Sociedade Brasileira de Ictiologia, 2022.

Abstract

Abstract A new Ancistrus species is described from Tapajós and Xingu river basins. It is distinguished from its congeners by the singular body color pattern, consisting of dark vermiculated stripes almost all over the body, and also by combination of features as a narrow head, large internostril distance, and absence of rows of enlarged odontodes on the lateral plates. In addition, the new species is distinguished from congeners that inhabit the rio Tapajós basin by the presence of a fully-developed adipose fin (vs. adipose fin absent in Ancistrus parecis and A. tombador, and vestigial adipose fin or absent in A. krenakarore). It differs from A. ranunculus, also from the rio Xingu, by the color pattern, smaller body size, smaller gill opening, and narrower cleithral width. The new taxon adds a new record to the list of species shared among the Xingu and Tapajós basins.

Details

Language :
English
ISSN :
19820224
Volume :
20
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Neotropical Ichthyology
Publication Type :
Academic Journal
Accession number :
edsdoj.68186c146656410f9348c5cd0d676f3a
Document Type :
article
Full Text :
https://doi.org/10.1590/1982-0224-2021-0129